🔍 Key Concepts

• Energy (air) cell diesel combustion systems – how they differ from direct injection • The role of turbulence and air–fuel mixing in efficient combustion • Where ignition actually starts in a cell-type diesel compared to the main chamber

💭 Think About

• Think about what problem the energy/air cell is trying to solve in a diesel engine. Is it about where ignition starts, or how well the fuel and air are mixed? • Consider how a small auxiliary chamber connected by narrow passages would affect the motion of hot gases when combustion begins. • Ask yourself: does the design aim to hit a specific part of the piston/cylinder, or to change the motion and mixing of gases in the main chamber?

✅ Before You Answer

• Identify whether the cell’s primary function is location of ignition or quality of mixing/turbulence. • Decide if the energy/air cell sends a strong jet of burning gases back into the main combustion chamber, and what that jet would do once it enters. • Eliminate any choice that describes an action that would occur entirely inside the cell without affecting the main chamber’s mixing.